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Finding the Fourth Proportional to 521.12, 781.88 and 375.24

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Solution

The fourth proportional to 521.12, 781.88 and 375.24 is: 563.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    521.12 : 781.88 = 375.24 : x
  2. Step 2: Convert to fraction form
    521.12/781.88 = 375.24/x
  3. Step 3: Cross multiply
    521.12x = 781.88 × 375.24
  4. Step 4: Simplify right side
    521.12x = 293,392.65
  5. Step 5: Solve for x
    x = 293,392.65/521.12
  6. Step 6: Final answer
    x = 563.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.